package demo;

public class demo1 {
    public static void main(String[] args) {
        String str = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?><request><entryOrder>";
        String regex = "(<|\\?)+xml(.)+\\?>";
        String outPut =  str.replaceAll(regex, "");
        System.out.println(outPut);
    }
}
